In the latest release of the of the iPhone SDK it was discovered that buried deep in the SDK are network setting and variables that apply to 3G connectivity…

From Gizmodo:

The settings are currently disabled in the firmware, but developer Chronic Productions found a way to enable a preferences screen, which provides an option to enable 3G networking. The setting also provides the warning, “Using 3G loads data faster, but decreases battery life.” It’s unclear if the switch to EDGE would happen automatically if 3G is unavailable, but guessing by current network switching behavior, the iPhone would use WiFi, 3G, and then EDGE in that order. However, if the EDGE connection in your area suffices, you could turn off the 3G radio altogether for a boost in battery life

Some rumors have been spreading of a May release of the iPhone with the June conference being saved for the “iTablet” release.  I don’t see this happening personally.  AT&T, which has continually gaffed in keeping iPhone news secret, has reportedly told it’s employees that no vacation time will be approved the week of, and following the WWDC in June.  Hmmm.  Wonder what they need to be at thier desks for.  Also, on the AT&T website, spotted for about a day or so, was the indication that “Black” was only one of several color choices that would be offered for the iPhone.  I think that is cool, but will likely stick with black, even when other options are offered.

In the end, we will all know on June 9th.